Through his work, philanthropist Bobby Sager has traveled to some of the most war-torn places in the world, coming face to face with children living with conflict and disaster. Taking photographs wherever he goes, Sager compiled his work into a book called "The Power of the Invisible Sun." Sager's images became an inspiration to musician Sting, his friend and fellow philanthropist, who incorporated the images as part of the reunion tour for his legendary band the Police. This photograph of three children was taken in Kabul, Afghanistan, 2002. (Courtesy Bobby Sager)